Upper Letts Lake Weather Forecast

    • 60
    • 75

    Sunny

    • 62
    • 75

    Mostly Sunny

    • 67
    • 75

    Mostly Cloudy

    • 65
    • 72

    Mostly Cloudy

    • 63
    • 73

    Mostly Sunny

    • 62
    • 75

    Mostly Sunny

Today 17 Jul Glenn and Colusa County Coast Range Above 3000 ft

Sunny. Highs 74 to 84. Southeast Winds up to 10 Mph.

Tonight 17 Jul Glenn and Colusa County Coast Range Above 3000 ft

Clear. Lows 55 to 65. South Winds around 10 Mph in the evening becoming light.

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Upper Letts Lake Temperature Statistics

July Temperature

Ukiah Municipal Airport (28.6 miles)

  • Lowest 8 July, 2026

    51.7 °F

  • Average July

    75.6 °F

  • Highest 14 July, 2026

    100.9 °F

Climate (2021–2026)

Ukiah Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    76.2 °F
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